docs: update and restructure (WIP)

docs/global/modules/samples2/pages/overview.adoc

@@ -50,20 +50,21 @@ to connect to a branch on a xref:core:reference/component-model-server.adoc[mode
 
 The branch can optionally be kept in sync with an MPS project by using the https://artifacts.itemis.cloud/service/rest/repository/browse/maven-mps/org/modelix/mps/model-server-sync-plugin/[model-server-sync-plugin] like in xref:use_case_1[use case 1]
 
-== Use case 2
+== Use case 3
 
 Here web frontend directly connects to a model server without an intermediate backend.
 
 It runs a https://artifacts.itemis.cloud/service/rest/repository/browse/maven-mps/org/modelix/model-client/[model-client] directly inside a Single-page application that connects to the model server.
 
-Like in xref:use_case_1_variant_b[variant B of use case 1], the model server can optionally be synced with a running MPS.
+Like in xref:use_case_1_variant_b[variant B of use case 2],
+the model server can optionally be synced with a running MPS.
 
 This use case has two clients.
 One is an application to edit model data and is written in https://vuejs.org/[Vue.js].
 And the other is an application to overview model data and is written with https://angular.io/[Angular].
 
 Both applications use a TypeScript API
-generated by the xref:core:reference/component-model-api-gen-gradle.adoc[Model API generator] from the xref:metamodel.adoc[metamodel.]
+generated by the xref:core:reference/component-model-api-gen-gradle.adoc[Model API generator] from the xref:metamodel.adoc[metamodel].